.clearfix:after { 
    content: ".";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}
.clearfix {display: inline-block;}
 
/* Hides from IE-mac \*/
* html .clearfix {height: 1%;} 
.clearfix {display: block;} 
/* End hide from IE-mac */
.cl{clear:both;}
.blank_10px{height:10px;margin:0;padding:0;}
.blank_20px{height:20px;margin:0;padding:0;}
